摘要:
The present invention relates to a method for the manufacture of highly purified 68 Ge material for radiopharmaceutical purposes. The invention particularly concerns the production of 68 Ge-API (API = Active Pharmaceutical Ingredient) solution complying with the Guidelines for good manufacturing practices (GMP). Starting material for the method of the present invention can be a 68 Ge stock solution of commercial or other origin as raw material. Such 68 Ge containing raw solutions are purified from potential metal and organic impurities originating from production processes. The radiochemical method disclosed is based on a twofold separation of 68 Ge from organic and metallic impurities with two different adsorbent materials. During the first separation phase 68 Ge is purified from both organic and metallic impurities by adsorption in germanium tetrachloride form, after which hydrolyzed 68 Ge is purified from remaining metallic impurities by cation exchange. The final 68 Ge-API-product e.g. fulfills the regulatory requirements for specifications of the GMP production of 68 Ge/ 68 Ga generators.
摘要:
Es wird ein Herstellungsverfahren für Halogenide des zweiwertigen Germaniums als Addukte mit einem Ether, insbesondere von Addukten mit der Formel GeX₂·(C₄H₈O₂), wobei X bevorzugt Chlor oder Brom bedeutet und als Ether bevorzugt 1,4-Dioxan verwendet wird, beschrieben. Germaniumtetrahalogenide lassen sich in Gegenwart eines Ethers, eines Organosilans und zumindest katalytischer Mengen eines Metallhydrides in einer einstufigen Reaktion und mit hohen Ausbeuten zu den Zielverbindungen reduzieren.
摘要翻译:描述了一种制备二价锗作为加成物与醚,特别是具有式GeX 2(C 4 H 8 O 2)的加合物的卤化物的方法,其中X优选为氯或溴,优选使用醚为1,4-二恶烷。 可以在醚,有机硅烷和至少催化量的金属氢化物的存在下还原四卤化锗,以一步反应和高收率得到目标化合物。
摘要:
Verfahren zum Entfernen von Wasserstoff aus in Siliziumtetrachlorid oder Germaniumtetrachlorid gelösten wasserstoffhaltigen Verbindungen. Durch eine Chlorierung oberhalb 1000°C werden sämtliche wasserstoffhaltige Verbindungen, auch organische Verbindungen, in wasserstofffreie Verbindungen, z.B. CCl 4 , umgewandelt, die die Verarbeitung zu Lichtleitfasern nicht stören.
摘要:
Disclosed is a process for producing a fluoride gas that can provide fluoride gases such as BF 3 , SiF 4 , GeF 4 , PF 5 or AsF 5 at a reduced production cost in a simple manner. The process is characterized in that a compound containing atoms, which, together with fluorine atoms, can form polyatomic ions, is added to a hydrogen fluoride solution to produce the polyatomic ions in a hydrogen fluoride solution and to evolve a fluoride gas comprising the fluorine atoms and the atoms that, together with the fluorine atoms, can form polyatomic ions.
摘要:
The invention relates to a system and method for the recovery of germanium from the Modified Chemical Vapor Deposition (MCVD) processing wastes by chemical conversion and recovery of germanium from the solid cake product. In the present method, the direct reaction of gaseous hydrogen chloride with the recovered materials effects the rapid and complete chlorination of the germanates, yielding germanium tetrachloride. The germanium tetrachloride product is completely volatilized and removed from the mixture during the exothermic process.
摘要:
The invention relates to a method for producing trimeric and/or quaternary silicon compounds or trimeric and/or quaternary germanium compounds. A mixture of silicon compounds or a mixture of germanium compounds is exposed to a non-thermal plasma and the resulting phase is subjected, at least once to vacuum rectification and filtration.
摘要:
The invention relates to a method for producing hexachlorodisilane or Ge2CI6, which is characterized in that, in a gas containing SiCI 4 or GeCI 4 , a) a non-thermal plasma is generated by means of an alternating voltage of the frequency f, and wherein at least one electromagnetic pulse having the repetition rate g is coupled into the plasma, the voltage component of which pulse has an edge steepness in the rising edge of 10 V ns -1 to 1 kV ns -1 and a pulse width b of 500 ns to 100 µs, wherein a liquid phase is obtained, and b) pure hexachlorodisilane or Ge 2 Cl 6 is obtained from the liquid phase.
摘要:
A method of producing high purity germanium tetrafluoride comprising the step of flowing a mixture of inert gas and fluorine gas through a reactor chamber preferably containing germanium powder. The reactor effluent stream is conducted through at least one product trap effective for condensing and retaining at least a portion of the germanium tetrafluoride product. The product is preferably then purified by repeatedly subliming the product as necessary to remove volatile impurities.